I did a bit of research online, and it sounded like I would need either some mod podge, or elmers glue for the base. I went with mod podge, as I knew I could get it in the matte finish. Somewhere along the way, I read something about using dish soap to help make the "frosted" look on the glass. So, those are my 2 tricks! The other things I used were: gel food coloring (blue & green), a 1 inch paint brush, cup for mixing, and paper plates for setting the glass on while painting them, and letting them dry.
I used about 3 Tbs of the matte mod podge, 3 drops of dawn dish soap, 3 drops blue food coloring, and 1 drop green. I mixed them all up in my cup, and started painting it on my jar. Right away, I noticed some streaking from the brush bristles. But I let it be.
I wanted it to have a little bit more color, so I did a second coat. You could leave it as it, if you'd like. It could have also been my food coloring, I believe they were a lighter blue and green. Here they are with the 2 coats.
Aren't they pretty? They do have some streaking, but that's okay with me. Something that's nice about this mixture is that it can be washed off and redone. If you'd like to make it more permanent, I'm sure you could spray it with some kind of varnish. I'm just going to leave them and see how they hold up. Also, you could apply the mixture inside the jar, swirl it around until it coats everything, and put it upside down to dry. I want to use mine for flowers, so that wouldn't work out for me very well.
Hope you give this easy project a try! I love how mine turned out! Let us know what you think!
Have a great Thursday!